CVE-2026-47666
High · CVSS 7.6Published 2026-08-26
CVSS
7.6
High
EPSS
—
exploit probability
Active Exploit
No
not yet listed
What is CVE-2026-47666?
Penpot is an open-source design and prototyping platform. In versions up to and including 2.14.3, Penpot is vulnerable to stored cross-site scripting through custom font family names, which are interpolated into a @font-face CSS rule and injected into the page as HTML without sanitization. Because the backend accepts an arbitrary font-family string and the frontend writes the resulting style through innerHTML, a name containing markup such as a closing style tag followed by a script can break out of the style element and execute JavaScript on the Penpot origin. The attack is passive: any team member who opens a file referencing the malicious font triggers script execution simply by rendering the page, allowing theft of session cookies, actions performed as the victim, and access to their files and projects. This issue is fixed in version 2.15.3.
CVSS Score Explained
CVSS 7.6 is High severity. Exploitation is likely straightforward and the impact is significant — data loss, privilege escalation, or remote code execution are common outcomes. Patch as soon as possible.
EPSS Exploitation Probability
No EPSS score yet — model needs more data on this CVE.
References & Patches
- ›https://github.com/penpot/penpot/commit/67d95679711da538b3b22a873bcb6c197104dc0c
- ›https://github.com/penpot/penpot/security/advisories/GHSA-w5hh-gj5c-5wpc
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